Stone-breaker



.(No Modl.)

G. LOWRY. STONE BRBAKER.

l2 sheets-sheet 2.

No. 532.329. Patented Jan. 8, 1895.

UNITED STATES GEORGE LOwEY, OE TIEEIN, OHIO, AssIGNoR rro THE GATES IRON WORKS,

PATENT OFFICE.

OE ILLINOIs.

STON E-BREAKER.

SPECIFICATION forming part of Letters Patent No. 532,329, dated January 8, 1895. v

Application filed November 14, 1892. Serial No 451,965. (No model.)

a gyratory movement is given to the movable crusher jaw which is itself of circular or of approximately circular cross section and among the objects of my invention maybe named, provision of means foireducing the friction ofthe apparatus for strengthening its construction by the formation and arrangei ates the movable crusher head or cone B at its ment of parts which permits of the use of wrought metal either steel or iron, and further, to facilitate the adjustment of the parts and to enable them to be easily assembled and taken apart for repairs.

In the accompanying drawings: Figure l is a vertical section through the crusher showing the general construction and arrangement of the parts. Fig. 2 is a horizontal section on line 2--2 Fig. l showing the crushing face. Fig. 3 is a horizontal section on line 3-3 Fig. 1 showing the construction ofthe bearing at the lower end of the crusher frame, the upper end of which bears the crushing cone.

A (Fig. 1)' is the vibrating shaft which actuupper end. It is journaled in the ball joint bearing C which has a spherical socket at its center corresponding to the spherical enlargement a on the shaft A. Said ball-joint socket plate C is flanged at c c both within and withthe shafts G2 H2.

out its point of junction with the upper and lower rings D, E of the frame.v The upper ring D carries the outer crushing shell Fv which is shaped like a hopper. Said shell or hopper F is turned on its exterior to fit within the ring D so as to fit closely, but not so tight as to prevent its movement within the ring D. It is supported within the ring D upon rollers G, H which are carried by studs G H respectively formed eccentrically upon Said shafts G2 H2 may be Vthe frame.

revolved in bearings in the ring D by using a lever or bar, and are held in any desired position by means of pins I, J, which register `with holes in the edge of wheels or disks K,

L keyed or otherw ise securely fastened to the shafts G2 H2. The lower part of the frame of the crusher is formed by a Wrought metal jacket preferably of the shape of the'frustum of a cone. The upper end of the jacket M is riveted or otherwise firmly secured to the ring E and its lower end is in like manner secured to the base ring N which is adapted to be secured to the foundation of the machine. EX- tendiug from within arecess in the lower side o f the bearing ring C is a tubularguard O which surrounds the shaft A. In the annular space between the guard O and jacket M is fitted the chute P. Said chute corresponds in shape to an oblique section of the jacket M and is provided .at its edge with a groove in which a fibrous packing R is placed which may be of rope or any other suitable material, or it maybe made dust proof by running it up with molten lead. Alike brous packing is placed around the interior opening of the chute P. The chute is held imposition by a lip s upon the spout S, so that upon the removal of the spout S the' chute can' be detached.

The construction of the bearing which carries the lower end of the shaft A will be understood by reference to Figs. 1 and 3. The

W, or. the rollers may be journaled in this ring andthe eccentric box made solid as before, the socket formed by the base ringN of In addition thereto, I prefer to employ also rollers V V which are carried by the overhanging fiange of the bearing.

block U. Said rollers V V bear upon the outer surface of the flange W. A pulley Y adapted to receive a belt or cable is fitted to the bearing block U and furnishes the power by which the crusher is driven. As is seen by reference to Fig. 2, the corrugation f at the to, and recede from,the surrounding shell F.

lower edge of the shell F and b at the bottom of the head B, correspond in n-umberthough not in size. I have found that a material improvement in the quantity and quality of the product is produced by such an arrangement of corrugations over that produced by an arrangement in which the number of cor'- rugations in the shell and head do not correspond. Said Fig. 2 also shows that more than two supporting rollers G, H may -be used for nthe shell F but I have found in practice that two served all ordinary purposes sufficiently well.

The operation of the apparatus is'y as fol`` lows: A rotary motion, imparted to the bearing block U by means of the belt pulley Y, causes the lower end of the shaftAto revolve in a circle whose diameter' is determined byv the eccentricity of its bearing in the block U. The upper end of the shaft A thus receivesa corresponding gyratory motion which causes each point of the circular circumference of the crushing head B to alternately approach The shell or hopper F being free to turn in' the ring D, rotates slowly therein under the action of the crushing head B. The corrugations on the shell F will, however, maintain such position relative to the c'orrugations on the head B that atthe point where the crushing is taking place from moment to moment, the depressions of one series of cor'rugations corresponds to the projections of the other series and the corrugations being equal in number, the space between them will be practically equal. The crushing takes place with greater ease and the; size of the pieces of crushed stone is more uniform than where the corrugations are equally spaced on both shell and cone but unequal in number. The guard O on the chute P conducts the crushed material to the discharge spout S, the fibrous packing R and R around the chute P excluding the dust from the working parts below. To provide forV readily oiling the bearings below, an oil cup X is placed outside of the shell and a pipe leads therefrom to a recess u in the top of the bearing block U. This recess has inwardly inclined sides so that the oil will not fly out when the block rotates. The size of the crushed material is regulated by raising or lowering the hopper F by means of the eccentrically supported pulleys Gr, H.

The amount of movement imparted to the crushing head may be regulated by altering the eccentricity of the bearing for the lower end of the shaft A. This may be done by substituting for the bearing piece T abearing piece having a thickervor thinner bottom than the one shown,or shims may be placedvbehind the bottom of the bearing piece for the same purpose. In order to afford ready access to the'bearing box T and also 'to the block U and rollersV V, a capZ is provided at the base of the machine immediately beneath the block U. By taking off this cap the box T can be removed and a new one inserted orshims can be placed behind it.

I claim- 1. The combination in a crusher of the class described, of a crushing head and hopper,

. eachk provided with an equal number of cory rugations at their out-er ends, said head being mounted upon an eccentrically arranged s shaft, an eccentric bearing block, and friction 1 rollers at the lower end of said shaft, substan- `tially as described.

2. The combination, in a crusher of the class described, of abearing block at the lower end of the crusher shaft; aneccentricbearing for said shaft formed in said block; and frictional rollers journaledV in said block andbeariug against the inner surface of a socket formed in the frame-work of the machine, substantially as described.

3. The cembinat-iomin a crusher of theclass described, of a bearing block at the lower end of the crusher shaft; an eccentric bearing for said.r shaft formed inl said block; and friction rollers journaledin said block and beard in-gagainst both the inner and outer surfaces ofa circular flange formed. upon the framework of the machine, substantially as described.

4. The combinatiom in a crusher having a conical crushing head and appliances for imparting movement thereto; an outercrushing shell surrounding said conicall crushing head; and supports for said shell by which its height relative to the movable crushing head may be altered, said supportsy consisting of rollerscarried by studs eccentrically placed upon rotat. able shafts journaled in the frame-work of the machine, substantially as described.

5. The combination, in a crusher of the class described, ofa jacket M'; a guard O; a movable chute plate P; packi'ngs R and R of fibrous material around its edges; and a spout S provided with a lip s adapted to support the lower edge of said chute, substantiallyas described.

6. The combination with the circular jacket, of a chute placed obliquely therein, and a spout provided with an inwardly-projectingv lip to support the lower end of said chute, substantially as described.

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7. The combination with the circular jacket, of a chute placed obliqnely therein and grooved or recessed to receive a packing, and a spout having an inwardly projecting lip to support the chute, substantially as described. y

8. The combination in a crusher of the class described, of the shaft A; a bearing block U at the bottom of said shaft; the bearing piece 'IV forming a bearing for said shaft eccentric to the block U, the iiange W upon the frame forming a socket for said block rollers V, V, journaled in said block and the pulley Y secured to said block, substantially as and for the purpose described.

9. The combination, with the frame of a plate Z forming the bottom of said socket, Crusher having in itsbase a bearing block and substantially as and for the purpose set forth ecoentrically placed box for the lowerl end of the Crusher shaft, of a plate having a. flange p GEORGE LOWRY 5 W forming a socket for said bearing block Witnesses:

rollers V, V, journaled in said block and W. J. GRIFFITH, bearing against said flange and a detachable J. F. BUNN. 

